Sash-balance



2 Sheets-Sheet 1.

(No Model.)

W. ORMSBY. sAsH BALANUE. No. 329,409. Patented Oct. 27, 1885. no o w] ly ,'bo

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W. ORMSBY.

SASH BALANCE. L No. 329,409. Patented Oct. 27, 1885;

UNITED STATES PATENT .OFFICEO WILLIAM ORMSBY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE ORMSBY SASH HOLDER COMPANY, OF PORTLAND, MAINE.

SASH-BALANCE.

` SPECIFICATION forming part of Letters Patent No. 329,409, dated October 27, 1885.

Application filed June 8, 1885. Serial No. 168,047. (No model.)

To @ZZ whom it may concern:

Beit known that I, WILLIAM ORMsEY, of Boston, in the county of Suffolk and State of lVIassachusetts,have invented certain new and useful Improvements in Sash-Balances, of which the following is a'specication.

This invention has for its object to provide a simple,noiseless,and effective means for bal ancing window-sashes and other analogous ar Aticles which require to be moved in vertical guides; and it consists as a whole in the combination,with a sash,of a spring-actuated riller o'r arbor journaled in suitable bearings over the casing in which the sash moves, and ileXible cords or bands connecting said roller or arbor with the sash, the arrangement being such that the tension of the spring balances and supports the sash at any point to which it may be moved.

The invention also consists in certain details, all of which Iwill now proceed to describe and claim.

Of the accompanying drawings, forming a part of this speciiication,Figure l represents a front elevation of a window-casing and its sashes, a part of the head of the casing being removed. Fig. 2 represents a section on line x x, Fig. 1. Fig. 3 represents a section on line. y y, Fig. 2. Fig. 4 represents asection on line e z,Fig. 3. Fig. 5 represents an elevation of a window-casing and its sashes, showing a different form of roller. Fig. 6 represents a section on line x x', Fig. 5. Fig. 7 represents an enlarged elevation; Fig. 8, alongitudinalsection of the roller shownin Figs. 5 and 6. Fig. 9 represents an end elevation of said roller and one of its supporting-bracket. Fig. 10 represents an edge view of a sash, showing a different means forsecuring and adjusting the supporting-bands.

The same letters of reference indicate the same parts in all the figures.

Inthe drawings, referring first to Figs. 1, 2, 3, and 4, a represents awindow-casing, at the top of which is formed a compartment or inclosed space or box, a, extending across the casing, and having for its bottom the head b, which usually forms the top of a window-caslng.

o c represent brackets attached to the head b, and projecting upwardly into the inclosed space over the head. Journaled in said brackets are two rollers or arbors, d d, each having at its end spools e e, on which are partially wound flexible metallic strips ff, which eX'- tend down through slits cut in the head b, and are attached to the upper and llower sashes, s s. On each arbor is a spiral spring, g, attached at one end to a conical or tapering enlargement, h,on the arbor, and at the other end to a correspondingly-formed sleeve, i, rigidly attached to one of the brackets. Said enlargements and sleeve constitute bearings for the ends of the spring, and prevent the main portion of the 'spring from binding on the arbor when the spring is compressed. The spring has sufficient tension or force to support the weight of the sash,so that the sash will remain at any point to which it may be moved.

The operation of the spring roller or arbor and flexible strips when the sash is being raised and lowered is entirely noiseless, and there is no liability of derangement of said devices, and the consequent sticking of the sash, as is often the case when the ordinary pulleys and weighted cords are employed. My improved fixture is therefore more desirable in these respects than the ordinary kind, and is capable ot' more ready application, the only labor required being to put the head b in place, the brackets and rollers with their fiexible strips being previously applied to the head. No side spaces or boxes are required, as is the case when weights are employed, hence the cost and width of the casing are reduced. The strips f f are preferably secured to spools 7c k, which are inserted in the edges of the sashes, and are held in place by screws, on which they are capable ot' being turned to take up or lengthen the strips, the screws being loosened to permit such rotations, and subsequently tightened to secure the spools. I prefer to make the spool e e on the arbors or rollers d d capable of being rotated on said arbors for the purpose of regulating the length of the strips f f. To secure said spools to the arbor, I attach ratehets ZZ rigidly to the arbor beside the spools e e, and provide the spools with spring-pawls m, Fig. 4, engaging with said ratchets. The ratchets and pawls permit the spools to be turned, as may be desired, and secure the spools rigidly to the arbors IOO when they are sufficiently adjusted. The head b is made in two sections, 2 3, andthe stop-head o, attached to the under side of the head, is made in corresponding sections, as shown in Fig. 2. When itis desirable to remove the arbors from the casing, it is only necessary to remove the inner section of the stop head and the section 2 of the head, the head being detachably secured by any suitable means, as by elongated screws p, Fig. 2. The brackets c c are attached to the section 2, and are applied and removed with it, consequently the application and removal of the brackets and arbors can be Very quickly and easily performed.

g represents what I term a detent-latch!7 which is a pin inserted through an orifice formed in the head b into a coinciding-orifice in the arbor d, as a means of preventing the arbor from rotating and unwinding the spring y when the sash is disconnected from the strips ff, the inclosed space in which the arbors or rollers and their springs' are located excluding moisture or dampness from said-parts and thus prevents rust.

In Figs. 5, 6, 7, 8, and 9 I have shown a cylinder, cl, as a substitute for the arbor d. Said cylinder is attached to hubs r r, which are adapted to rotate on a rod, t. Said rod is provided with squared ends, which rest `in squared sockets in the supportingbrackets u,

so that the'rod cannot rotate. The spring g is attached at one end to the rod t and at the other end to one of the huhs'r. The spools e e, on which the strips ff are wound, are capable of vbeing rotated independently, and

, are provided with ratchets c e', which are engaged with spring dogs or latches n @,attached to the cylinders, provision being thus made for theadjustment of the length of the strips.

'w w represent cylindrical cups or casings of sheet metal attached to the brackets or other fixed supports and covering the portions of the strips ff, that are'wound upon the spools e c. In Fig. l0 I have shown one ofthe strips fcarried down to the lower portion of the sash, and there wound upon a spool, 7c, in the sash. Said spool has a corrugated portion, which is held by aset-screw, c, inserted in the side of the sash. In the bottom of the sash is a slot, b', in which a tool may be inserted for the purpose of rotating the spool la by its corrugated portion, and 4thus winding or unwinding the strip. Provision is thus made for adjusting the strips without removing the sash from the casing. The described improvements may be used to operate heavy curtains, risingand-falling doors or gates, and other vertically-movable objects.

I claim- 1. The combination of a casing, asash movable vertically therein, a detachable section having arbor-supporting brackets, an arbor mounted in said brackets and actuated by a coiled spring having one end secured to the arbor and the other to one of the brackets, and the flexible strips secured to said roller and to the sash, as set forth.

2. The combination, with the casing and sash, of the spring-actuated roller or arbor, the spools independently rotatable thereon,

the flexible strips secured to said spools and sash, and means, substantially as described, for adjusting the spools upon the arbor, Whereby the adjustment of the length of the flexible" strips is permitted, as set forth.

8. The combinatiomwith a window-casing having a box at its top, of the removable sec' tion at the bottom of said box having brackets c c, an arbor or roller mounted in said brackets and actuated by a-coiled spring vhaving one end secured to the arbor and the other to' one of the brackets, and flexible strips connected to said roller and' passing through slots'in the bottom of the box or case, as set forth.

4. The combination of the casing,'the head" having the detachable section 2, the brackets attached to said section and the rollers or arbors journaled in said brackets,and the tlexi` ble stripsff, asset forth.

5. The'combinaton ofthe casing,the sprin`g-f rollers journaled over the head of the casing` 1 the flexible strips secured to said rollers, and

the detentlatch, whereby the rollers may be locked, as set forth.

6. The combination of the Window-frame, the sash, and flexible spring actuated cords or strips, adjustable spools located in said sash to which the flexible spring-actuated cords or strips are secured, substantially as set forth.

7. The sash having the stripv or cord' holding spools inserted in recesses in its lower portion, and provided with slots b, whereby said spools may be reached from below, and with setscrews inserted in the side of the sash to hold said spools, as set forth.

In testimony whereof I have signed my' name to this specification, in the presence ofv two subscribing witnesses, this 28thday of May, 1885.

WILLIAM ORMSBY. IVitne'sses: EDWIN A. ORMsBY, THOMAS GRAY.

IOO 

